2 e) Extraction & Uses of Metals

Question 1

Alloy

Answer 1

Mixture of a metal with, usually, other metals or carbon.

Question 2

Electrolysis

Answer 2

Chemical change caused by passing an electric current through a compound that is either molten or in solution.

Question 3

Reduction

Answer 3

Loss of oxygen or gain of electrons.

Question 4

Anion

Answer 4

Negative ion

Question 5

Anode

Answer 5

Positive electrode

Question 6

Cathode

Answer 6

Negative electrode

Question 7

Cation

Answer 7

Positive ion

Question 8

Electrode

Answer 8

A conductor through which electricity is passed.

Question 9

Malleable

Answer 9

Property of a metal which allows it to be hammered into different shapes.

Question 10

Ore

Answer 10

Rocks that contain enough of the mineral for it to be worthwhile to extract the metal.

Question 11

Reactivity series

Answer 11

A list of elements (mainly metals) in order of decreasing reactivity.

Question 12

Roasting

Answer 12

Process in which metal ores are heated in air to convert them into metal oxides.

Question 13

Scrubbing

Answer 13

Removing pollutant gases from the gases produced in a combustion reaction.